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Free Java implementations are software projects that implement Oracle's Java technologies and are distributed under free software licences, making them free software. Sun released most of its Java source code as free software in May 2007, so it can now almost be considered a free Java implementation. [ 1 ]
OpenJDK (Open Java Development Kit) is a free and open-source implementation of the Java Platform, Standard Edition (Java SE). [2] It is the result of an effort Sun Microsystems began in 2006, four years before the company was acquired by Oracle Corporation.
SableVM – first free software JVM to support JVMDI and JDWP. Makes use of GNU Classpath. LGPL. Version 1.13 released on March 30, 2007. Squawk virtual machine – a Java ME VM for embedded systems and small devices. Cross-Platform. GPL. SuperWaba – Java-like virtual machine for portable devices. GPL. Discontinued, succeeded by TotalCross.
The Java Development Kit (JDK) is a distribution of Java technology by Oracle Corporation. It implements the Java Language Specification ( JLS ) and the Java Virtual Machine Specification ( JVMS ) and provides the Standard Edition ( SE ) of the Java Application Programming Interface ( API ).
GraalVM for JDK 20 2023-06-13 Oracle JDK 20.0.1 OpenJDK 20.0.1 GraalVM for JDK 21 2023-09-19 Oracle JDK 21 OpenJDK 21 This release brought all Java SE 21 features to GraalVM such as virtual threads from Project Loom. Performance improvements in this release made ahead-of-time compiled Java applications run at peak performance as on HotSpot.
Advanced Package Tool (APT) is a free-software user interface that works with core libraries to handle the installation and removal of software on Debian and Debian-based Linux distributions. [4] APT simplifies the process of managing software on Unix-like computer systems by automating the retrieval, configuration and installation of software ...
The Java platform is a suite of programs that facilitate developing and running programs written in the Java programming language. A Java platform includes an execution engine (called a virtual machine), a compiler and a set of libraries; there may also be additional servers and alternative libraries that depend on the requirements.
Consequently, you can install a 32-bit or 64-bit JVM on a 64-bit operating system. The primary advantage of running Java in a 64-bit environment is the larger address space. This allows for a much larger Java heap size and an increased maximum number of Java Threads, which is needed for certain kinds of large applications; however there is a ...